{"product_id":"hp-pavilion-x2-10-j014tu-replacement-battery-38v-8250mah-li-polymer","title":"HP Pavilion X2 10-J014TU Replacement Battery 3.8V 8250mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHP Pavilion X2 10-J014TU — 3.8V Li-Polymer Replacement Battery (810749-421)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.8V, 8250mAh Li-Polymer cell replaces the internal battery in the HP Pavilion X2 10 detachable tablet screen. It fits the tablet portion of the hybrid — not the keyboard dock. Compatible part numbers include DO02XL, HSTNN-LB6Y, and TPN-I121 among others listed in the product data.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePavilion X2 10 tablet screen compatibility:\u003c\/strong\u003e\n    The X2 10 series uses a single flat Li-Polymer cell seated inside the detachable display unit. All models in this family — J013TU, J014TU, K2N77PA — share the same connector pinout, voltage rail, and BMS handshake, so one cell covers the full range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge, full load discharge, and BMS cutoff on a Pavilion X2 10 unit. The BMS accepted the cell without fault flags, and the protection circuit tripped cleanly at low-voltage cutoff as expected.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the X2 10:\u003c\/strong\u003e\n    After fitting this cell, run the tablet down to hibernate cutoff under normal use, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that routinely appears after any cell swap in this series.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the X2 10 tablet reports poor battery health immediately after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Pavilion X2 10 stores charge history in EEPROM tied to the original cell. When a new cell is installed, the BIOS reads that stale data and flags health as degraded — even though the replacement is fresh. This is a firmware behaviour, not a fault with the new cell. Running one full discharge-to-hibernate then a complete uninterrupted charge gives the BIOS enough data to overwrite the old EEPROM values. After one to two full cycles, the health status normalises.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFuel gauge reading wildly wrong for the first few charges\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe X2 10 uses a fuel gauge IC that tracks capacity by counting coulombs against a stored cell profile. A new cell resets that baseline, so the gauge reads inaccurately — jumping from 60% to 15% or showing full charge well before the cell is actually topped up. This is not a defective battery. The IC needs two to three full discharge and charge cycles to re-map against the new cell's actual chemistry. After the third full cycle, percentage readings stabilise and the gauge tracks within a few percent of real charge state.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409701503066,"sku":"BWCS-HPX122NB-1","price":61.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409701535834,"sku":"BWCS-HPX122NB-2","price":70.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409701568602,"sku":"BWCS-HPX122NB-3","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HPX122NB-1.webp?v=1779580454","url":"https:\/\/batteryweb.com\/products\/hp-pavilion-x2-10-j014tu-replacement-battery-38v-8250mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}